Yes

you do need a jacket based on the weather in Philadelphia, PA 19103, USA 4 minutes ago

Why? Because it's so windy, your hat has officially retired from your head!
70°F21°C & Cloudy

Wind is 12 mph19 km/h from the Northeast, gusting to 24 mph38 km/h
August 21
3pm72°F22°C12 mph20 km/h NortheastMostly Cloudy
4pm72°F22°C11 mph18 km/h NortheastCloudy
5pm73°F23°C11 mph18 km/h NortheastMostly Cloudy
6pm73°F23°C10 mph16 km/h NortheastPartly Cloudy
7pm73°F23°C8 mph13 km/h NortheastMostly Clear
8pm71°F21°C6 mph10 km/h NorthMostly Clear
9pm70°F21°C7 mph12 km/h NorthMostly Clear
10pm68°F20°C8 mph12 km/h NorthMostly Clear
11pm67°F19°C7 mph12 km/h NorthMostly Clear
August 22
12am66°F19°C7 mph11 km/h NorthClear
1am65°F18°C7 mph10 km/h NorthClear
2am63°F17°C7 mph11 km/h NorthClear
DateLowHighWindDayNight
August 2162°F16°C74°F23°C9 mph15 km/h from NortheastDrizzleClear
August 2260°F15°C81°F27°C5 mph7 km/h from NorthClearClear
August 2362°F17°C82°F28°C7 mph12 km/h from SouthClearMostly Clear
August 2466°F19°C83°F28°C8 mph13 km/h from SouthPartly CloudyDrizzle
August 2569°F20°C82°F28°C6 mph10 km/h from WestPartly CloudyClear
August 2663°F17°C77°F25°C8 mph13 km/h from WestMostly ClearMostly Clear
August 2761°F16°C76°F24°C8 mph12 km/h from NorthwestMostly ClearMostly Clear

No

Low of 60°F16°C, High of 82°F28°C
Wind: 5 mph7 km/h
Precipitation: None

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